For every action, there is an equal and opposite reaction, is Newton's

Gravitational force is maximum at which place

A metal ball and a rubber ball, both having the same mass, strike a wall normally with the same velocity. The rubber ball rebounds and the metal ball does not rebound. It can be concluded that

A boy sitting in an open car moving with the constant speed throws a ball straight up into the air. The ball falls

Rate of change of momentum is

Which law is also called law of inertia ?

A spring balance A and a beam balance B are used to weigh an object at different points on Earth. It will be observed that

In sky diving, a diver jumps from a plane. Which of the following describe his fall before he opens his parachute?
1.He falls freely with continuously increasing velocity.
2.Initially his velocity increases till it becomes constant.
3.He attains terminal velocity Which of the above statements is/are correct:

A particle of mass m is moving along a straight path through the origin of coordinates with a velocity v. The angular momentum of the particle about the origin

The scientific principle involved in a laser is